/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.content;

// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import com.example.android.apis.R;

import android.app.Activity;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.ContentProvider.PipeDataWriter;
import android.content.res.AssetFileDescriptor;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Demonstration of styled text resources.
 */
public class InstallApk extends Activity {
	static final int REQUEST_INSTALL = 1;
	static final int REQUEST_UNINSTALL = 2;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.install_apk);

		// Watch for button clicks.
		Button button = (Button) findViewById(R.id.unknown_source);
		button.setOnClickListener(mUnknownSourceListener);
		button = (Button) findViewById(R.id.my_source);
		button.setOnClickListener(mMySourceListener);
		button = (Button) findViewById(R.id.replace);
		button.setOnClickListener(mReplaceListener);
		button = (Button) findViewById(R.id.uninstall);
		button.setOnClickListener(mUninstallListener);
		button = (Button) findViewById(R.id.uninstall_result);
		button.setOnClickListener(mUninstallResultListener);
	}

	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent intent) {
		if (requestCode == REQUEST_INSTALL) {
			if (resultCode == Activity.RESULT_OK) {
				Toast.makeText(this, "Install succeeded!", Toast.LENGTH_SHORT)
						.show();
			} else if (resultCode == Activity.RESULT_CANCELED) {
				Toast.makeText(this, "Install canceled!", Toast.LENGTH_SHORT)
						.show();
			} else {
				Toast.makeText(this, "Install Failed!", Toast.LENGTH_SHORT)
						.show();
			}
		} else if (requestCode == REQUEST_UNINSTALL) {
			if (resultCode == Activity.RESULT_OK) {
				Toast.makeText(this, "Uninstall succeeded!", Toast.LENGTH_SHORT)
						.show();
			} else if (resultCode == Activity.RESULT_CANCELED) {
				Toast.makeText(this, "Uninstall canceled!", Toast.LENGTH_SHORT)
						.show();
			} else {
				Toast.makeText(this, "Uninstall Failed!", Toast.LENGTH_SHORT)
						.show();
			}
		}
	}

	private OnClickListener mUnknownSourceListener = new OnClickListener() {
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
			intent.setData(Uri.fromFile(prepareApk("HelloActivity.apk")));
			startActivity(intent);
		}
	};

	private OnClickListener mMySourceListener = new OnClickListener() {
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
			intent.setData(Uri.fromFile(prepareApk("HelloActivity.apk")));
			intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
			intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
			intent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME,
					getApplicationInfo().packageName);
			startActivityForResult(intent, REQUEST_INSTALL);
		}
	};

	private OnClickListener mReplaceListener = new OnClickListener() {
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
			intent.setData(Uri.fromFile(prepareApk("HelloActivity.apk")));
			intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
			intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
			intent.putExtra(Intent.EXTRA_ALLOW_REPLACE, true);
			intent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME,
					getApplicationInfo().packageName);
			startActivityForResult(intent, REQUEST_INSTALL);
		}
	};

	private OnClickListener mUninstallListener = new OnClickListener() {
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_UNINSTALL_PACKAGE);
			intent.setData(Uri
					.parse("package:com.example.android.helloactivity"));
			startActivity(intent);
		}
	};

	private OnClickListener mUninstallResultListener = new OnClickListener() {
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_UNINSTALL_PACKAGE);
			intent.setData(Uri
					.parse("package:com.example.android.helloactivity"));
			intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
			startActivityForResult(intent, REQUEST_UNINSTALL);
		}
	};

	private File prepareApk(String assetName) {
		// Copy the given asset out into a file so that it can be installed.
		// Returns the path to the file.
		byte[] buffer = new byte[8192];
		InputStream is = null;
		FileOutputStream fout = null;
		try {
			is = getAssets().open(assetName);
			fout = openFileOutput("tmp.apk", Context.MODE_WORLD_READABLE);
			int n;
			while ((n = is.read(buffer)) >= 0) {
				fout.write(buffer, 0, n);
			}
		} catch (IOException e) {
			Log.i("InstallApk", "Failed transferring", e);
		} finally {
			try {
				if (is != null) {
					is.close();
				}
			} catch (IOException e) {
			}
			try {
				if (fout != null) {
					fout.close();
				}
			} catch (IOException e) {
			}
		}

		return getFileStreamPath("tmp.apk");
	}
}
